US5072637A - Apparatus and method for segmenting continuous webs into predetermined lengths - Google Patents
Apparatus and method for segmenting continuous webs into predetermined lengths Download PDFInfo
- Publication number
- US5072637A US5072637A US07/516,799 US51679990A US5072637A US 5072637 A US5072637 A US 5072637A US 51679990 A US51679990 A US 51679990A US 5072637 A US5072637 A US 5072637A
- Authority
- US
- United States
- Prior art keywords
- web
- cutting
- assembly
- continuous web
- continuous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
- B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
- B26D7/0625—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by endless conveyors, e.g. belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
- B65H35/06—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
- D06H7/02—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials transversely
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/04—Processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/04—Processes
- Y10T83/0448—With subsequent handling [i.e., of product]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/202—With product handling means
- Y10T83/2092—Means to move, guide, or permit free fall or flight of product
- Y10T83/2192—Endless conveyor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/444—Tool engages work during dwell of intermittent workfeed
- Y10T83/463—Work-feed element contacts and moves with work
- Y10T83/4632—Comprises a work-moving gripper
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/647—With means to convey work relative to tool station
- Y10T83/6579—With means to press work to work-carrier
Definitions
- the present invention relates to cutting package wrapping sheets. More particularly, this invention is directed to an improved method and apparatus for cutting a sheet from a continuous web into predetermined lengths.
- Packaging used in wrapping machines is typically pliable to permit proper wrapping of a package by the machine.
- the soft, stretchy characteristics of the packaging necessary for a good wrap tend to make cutting or severing a sheet from a continuous web difficult.
- knife blades having a serrated cutting edge defining sharp cutting points which initially pierce the web to facilitate cutting or tearing of the web along the length of the cutting blade.
- One design of packaging machine provides for wrapping packages, particularly articles supported on trays, by elevating the packages into stretched film sheets.
- the sheets are severed from a continuous web by means of a pivotally mounted, cam actuated knife blade.
- the knife blade includes an upwardly extending serrated cutting edge which is reciprocated through a web drawn from the continuous web source.
- a bracket mounted above the drawn web defines a channel into which the knife blade is inserted to sever a sheet from the continuous web.
- the improved film cutter must be reliable, inexpensive and, preferably, be easily useable with existing wrapping machines to permit the use of a larger variety of materials by the machine.
- Another object of this invention is to provide an apparatus for segmenting a continuous web wherein the effectiveness of the cutting step is enhanced by web clamping means on both the upstream and downstream side of the cutting blade.
- a further object of this invention is to provide a web cutting apparatus having a self-adjusting web delivery means which eliminates web jamming and enhances safety.
- a continuous web is passed through the nip of a web delivery means having means to self-adjust the resistance of the nip force depending upon the thickness of the web, and a predetermined length is passed to a web clamping and cutting area.
- the web is held immovably in place during the cutting operation on both the downstream and upstream sides of the cut.
- After the web has been segmented the sheet is passed from the web cutting means and another segment of web is moved in place for the next cut.
- the web delivery means allows the force applied at the nip to automatically adjust, allowing easy entry into the nip of a range of web material thicknesses and compositions.
- FIG. 1 is a perspective view of a schematic of the web segmenting apparatus which embodies the features of the invention
- FIG. 2 is a schematic side view of the web segmenting apparatus without the presence of a continuous web
- FIG. 3 is a schematic side view of the web segmenting apparatus illustrating the web feeding phase
- FIG. 4 is a schematic side view of the web segmenting apparatus illustrating the web fed to the web cutting area
- FIG. 5 is a schematic side view of the web segmenting apparatus illustrating the clamping and cutting phase
- FIG. 6 is a schematic side view of the web segmenting apparatus illustrating the cut web exit and next web feeding phase.
- FIG. 7 is a schematic side view of the web segmenting apparatus illustrating another embodiment of the web cutting means.
- FIG. 1 an embodiment of an apparatus for segmenting a continuous web into predetermined lengths in accordance with the present invention.
- the web segmenting apparatus is generally indicated at 10, and it comprises a web delivery means 11 and a web cutting means 30, both mounted in a frame (not shown).
- a continuous web W is supplied to the web delivery means, normally from a bulk supply roll supported on a free rolling armature.
- the apparatus of the present invention is useful for cutting webs from a variety of material and thicknesses, it has been found to be especially suited for cutting plastic films of soft, pliable material used in packaging, such as high density polyethylene. It has been found that the apparatus of this invention is particularly well suited to cut webs of varying thicknesses.
- web delivery means 11 comprises an upper feed assembly 12 and a lower feed assembly 13, positioned One above the other forming a nip which allows the segmenting apparatus to receive and feed a continuous web having a varying range of thickness and composition without adjustment by the operator.
- upper feed assembly 12 and lower feed assembly 13 are belt assemblies formed from endless belts 14, 15 between which web W passes.
- the belt assemblies formed by belts 14, 15 are substantially parallel to each other and are supported by rollers, respectfully 16, 17, 18, 19 suitably mounted to the frame.
- the upper feed assembly and lower feed assembly may comprise other embodiments such as oppositely disposed rollers positioned to form a nip and provide web delivery and clamping functions.
- the upper feed assembly 12 and lower feed assembly 13 are interconnected by a drive means. Any suitable drive means such as gears 20, 21 may be used.
- the driving gear 20 is located on the upstream end of the lower feed assembly 13.
- Upper and lower feed assemblies 12, 13 form a floating nip through which a continuous web W is advanced from a supply roll.
- an appropriate motor not shown
- the feed assemblies advance the web W through the nip.
- the gear linkage 20, 21 may be controlled by a clutch/brake assembly.
- the gears drive the upper and lower assemblies, shown in FIG. 2 as lower drive belt 15 and upper floating belt 14, in opposite directions as illustrated by the arrows, offering upper and lower friction surfaces to deliver the web W therebetween along a predetermined substantially horizontal path to the web cutting means 30.
- Upper floating feed assembly 12 is connected to lower drive feed assembly 13 by a four point pivoting parallelogram armature shown by linkage armatures 22, 23 and provide means for reducing resistance of the web as the web enters the nip.
- the orientation and location of the upper floating feed assembly 12 in relation to the lower drive feed assembly 13 is important to the efficacy of both the initial feeding of the web, and the cutting and clamping function, as will be explained.
- the web cutting means 30 is positioned upstream from the web delivery means 11, and comprises a cutting blade and clamping assembly 31 extending laterally across the plane of the web and a second web clamping means, shown in FIG. 1 as lower web exit clamping means 32.
- the cutting blade and clamping assembly 31 comprises an assembly support 33 to which cutting blade 34 and an upper web exit clamping means 35, are attached in web engaging relationship.
- the cutting blade 34 is attached to assembly support 33 on the downstream side of the assembly from the upper web exit clamping means 35, and preferably has a serrated cutting edge facing the web.
- the upper web exit clamping means 35 is a strip made of resilient material, preferably an antistatic foam.
- upper exit clamping means comprises roller 39 interconnected and co-acting with upper feed assembly 12 through a pair of arms 40 supporting each end of roller 39 and attached to end plates 41 on each side of upper feed assembly 12.
- the upper exit clamping roller 39 is linked to lower exit web means 32 by a suitable means such a flexible shaft and may be positively driven to assist the web and cut sheets through web cutting means 30. It is also desirable to rotate roller 39 slightly faster than the assemblies interconnected thereto.
- the cutting blade 34 is attached to assembly support 33.
- lower web exit means 32 is a belt assembly formed from endless belt 36 supported by rollers 37, 38 mounted to the frame.
- Lower exit web means 32 is connected to the lower feed belt assembly drive to provide a positive advancement of a severed sheet to a further workstation.
- the length of the segmented sheet and activation of the cutting cycle may be accomplished in any number of ways.
- One such example is to use a modular electronic control means which may be programmed to sever webs of different lengths and amounts. This allows flexible operator orientation to the machine while performing a variety of protective packaging tasks under diverse machine installation conditions.
- the web feed delivery cycle and web cutting cycle are activated via a keypad on the programmable electronic control unit.
- the preset web lengths can also be created by activating a foot switch. Using the apparatus of this invention, webs of precise length may be cut.
- a continuous web W is advanced into the nip of the web delivery means 11, while the interconnected upper floating feed assembly 12, lower feed belt assembly 13, and exit assembly 32 are running.
- the cutting blade and clamping assembly 31 is poised, out of the way of the generally horizontal predetermined path of the web material.
- the change in resistance between the upper floating feed assembly and lower feed assembly on the web equalizes and the full force of the upper floating feed assembly will bear down in an even pressure over the surface of the moving web.
- the gear assembly 20, 21 will act as a governor that constantly adjusts and equalizes the upper floating feed assembly resistance on the moving web to that of the lower feed assembly.
- the surface and composition of belts 14, 15 are tailored to exert a desired amount of friction on a variety of fibrous and calendared web materials assuring positive feeding, driving, and clamping.
- the web W is passed through the clamping and cutting area and onto the lower exit clamping means 32 of web cutting means 30 which is simultaneously driven, and stopped, by a link to the lower drive feed assembly 13.
- a clutch-brake stops all three of the interconnected assemblies.
- the up and down clamping and cutting cycle of assembly 31 is operated through a second clutch engaging a shaft fitted with a pair of cams at each end.
- the cutting blade and clamping assembly 31 moves vertically on a pair of linear bearings mounted to the frame.
- the bottom surface of the clamping strip 35 when fully expanded, extends below the blade edge when the assembly is in its raised position, as shown in FIG. 4.
- the clamping strip contacts the web, clamping the web firmly against the stopped lower web exit clamping means 32 before the blade edge pierces the web.
- the blade recycles to the its raised position shown in FIG. 6 and holds until the clutch engages again to pass the blade through another cycle.
- roller 39 serves the same clamping function as clamping strip 35.
- the downstream side of the web is retained taut by the unique clamping function of the upper floating feed and lower drive feed assemblies.
- the downstream side of the web engaged by web delivery means 11 is pulled from between the upper floating feed and lower drive feed assemblies.
- the upper feed assembly because it is free to move on its parallelogram armature begins to rotate on gear 21 as shown in FIG. 5.
- the fixed lower drive feed assembly 13 and drive means 20, 21 are held stable by the clutch/brake mechanism.
- torque T 2 As the floating upper feed assembly 12 rotates, shown by torque T 2 , the engaged gears drive the upper feed assembly downstream firmly toward the web, as shown by force F 2 .
- force F 2 The more the upstream side of the web is pulled in the direction of the blade, the more the clamping force on the web. This assures a taut cutting plane across the web.
- the interconnecting arms between the upper clamping roller 39 and the upper feed assembly cause the upper clamping roller to lift when the upper feed assembly 12 rotates as a result of the lifting pressure of T 1 from a web entering the nip and to apply clamping pressure when the upper feed assembly applies clamping pressure.
- the drive mechanisms will re-engage and feed the next desired length.
- the lower web exit clamping means 32 advances the severed web until the forward end protrudes sufficiently out of the machine exit to passed to a further workstation or to be safely removed manually. Because lower web exit clamping means 32; upper floating feed assembly 12; and lower feed assembly 13 are linked, at least a minimum length is always fed past the cutting area after each clamp/cut cycle.
- the clamp/cut cycle activate immediately, omitting the initial feed drive length, followed by the minimum exit feed drive cycle or the feed length cycle required for the next desired web assuring accuracy of the length of the cut web.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Nonmetal Cutting Devices (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/516,799 US5072637A (en) | 1990-04-30 | 1990-04-30 | Apparatus and method for segmenting continuous webs into predetermined lengths |
EP19910106545 EP0455112A3 (en) | 1990-04-30 | 1991-04-23 | Apparatus and method for segmenting continuous webs into predetermined lengths |
CA002041118A CA2041118A1 (en) | 1990-04-30 | 1991-04-24 | Apparatus and method for segmenting continuous webs into predetermined lengths |
JP3125554A JPH04242528A (ja) | 1990-04-30 | 1991-04-26 | 連続ウエブの切断方法及びその装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/516,799 US5072637A (en) | 1990-04-30 | 1990-04-30 | Apparatus and method for segmenting continuous webs into predetermined lengths |
Publications (1)
Publication Number | Publication Date |
---|---|
US5072637A true US5072637A (en) | 1991-12-17 |
Family
ID=24057146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/516,799 Expired - Lifetime US5072637A (en) | 1990-04-30 | 1990-04-30 | Apparatus and method for segmenting continuous webs into predetermined lengths |
Country Status (4)
Country | Link |
---|---|
US (1) | US5072637A (ja) |
EP (1) | EP0455112A3 (ja) |
JP (1) | JPH04242528A (ja) |
CA (1) | CA2041118A1 (ja) |
Cited By (16)
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US5346195A (en) * | 1993-01-14 | 1994-09-13 | Wallace Computer Services, Inc. | Apparatus and method for indexing sheets |
US5511500A (en) * | 1992-07-28 | 1996-04-30 | Mim Industries, Inc. | Side-by-side programmable feed system for a sewing apparatus |
US5727370A (en) * | 1996-06-21 | 1998-03-17 | Flexible Products Co | Apparatus and method for producing foam cushions utilizing flexible foam mixing chamber |
US6505731B2 (en) * | 2001-02-09 | 2003-01-14 | Teepack Spezialmaschinen Gmbh & Co. Kg | Transport device for strand materials in continuous production of infusion bags for making tea |
US6569283B1 (en) * | 2000-03-15 | 2003-05-27 | Sealed Air Corporation (Us) | Inflator/sealer device for inflatable packaging cushion |
US6601489B2 (en) * | 2000-01-06 | 2003-08-05 | Schmale-Holding Gmbh & Co. | Cutting and transporting a sheet workpiece |
US20040182210A1 (en) * | 2003-03-19 | 2004-09-23 | Schmale-Holding Gmbh & Co. | Transversely cutting and conveying a web |
US20050034577A1 (en) * | 2003-08-14 | 2005-02-17 | Asm Assembly Automation Ltd | Apparatus and method for indexing and severing film |
US20110233101A1 (en) * | 2010-02-24 | 2011-09-29 | Michael Baines | Packaging materials and methods |
US9834419B2 (en) | 2012-07-27 | 2017-12-05 | Plumettaz Holding Sa | Linear driving device with load dependent clamping capability |
CN107792713A (zh) * | 2017-10-23 | 2018-03-13 | 黑龙江众合鑫成新材料有限公司 | 一种用于蜂窝芯制造的全自动连续叠合机 |
US10285483B1 (en) * | 2015-11-16 | 2019-05-14 | Peter W. Salvesen | Delivering foil leaves of selected lengths from an indeterminate length of foil |
CN111826936A (zh) * | 2020-07-25 | 2020-10-27 | 张守耀 | 一种丙纶绳生产处理方法 |
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DE4140365C2 (de) * | 1991-12-07 | 1995-05-11 | Heidelberger Druckmasch Ag | Vorrichtung zum Beschneiden einer Materialbahn |
US5239809A (en) * | 1992-02-19 | 1993-08-31 | Long John D | Apparatus for feeding packages from a web of packages to a receptacle |
ES2064271B1 (es) * | 1993-03-15 | 1998-06-16 | Antonio Guasch Grano S L | Maquina modular para corte y entrega de tejidos, en especial napas, guatas o similares. |
JP2012140143A (ja) * | 2010-12-28 | 2012-07-26 | Okamoto Kk | 食品包装方法及び食品包装装置並びに食品用包装体 |
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DE102019120431A1 (de) * | 2019-07-29 | 2021-02-04 | Müller Martini Holding AG | Vorrichtung und Verfahren für den Transport eines Druckprodukts |
CN111115337B (zh) * | 2020-01-08 | 2024-07-02 | 无锡先导智能装备股份有限公司 | 贴胶机构、贴胶装置及包胶设备 |
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DD206756B1 (de) * | 1981-12-18 | 1986-10-22 | Rationalisierung D Moebelindus | Sicherheitsvorrichtung an einer einrichtung zum durchtrennen einer endlosen bahn |
-
1990
- 1990-04-30 US US07/516,799 patent/US5072637A/en not_active Expired - Lifetime
-
1991
- 1991-04-23 EP EP19910106545 patent/EP0455112A3/en not_active Withdrawn
- 1991-04-24 CA CA002041118A patent/CA2041118A1/en not_active Abandoned
- 1991-04-26 JP JP3125554A patent/JPH04242528A/ja active Pending
Patent Citations (17)
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US2940504A (en) * | 1955-02-22 | 1960-06-14 | Giroud Freres Ets | Machines for the manufacture of pile articles |
US2947358A (en) * | 1957-07-08 | 1960-08-02 | Ibm | Roll spacing for a card punch mechanism |
US3267781A (en) * | 1963-10-30 | 1966-08-23 | Logic Systems Inc | Method and apparatus for presetting material consuming machines to adjust product parameters |
US3277764A (en) * | 1964-09-09 | 1966-10-11 | Edward V Hene | Apparatus for working corrugated board or the like |
CH429584A (de) * | 1964-10-16 | 1967-01-31 | Stolze Richard Ing Dr | Antrieb für Kettenförderer |
US3761003A (en) * | 1968-12-26 | 1973-09-25 | Morgan Construction Co | Flat chain guide |
US3620432A (en) * | 1969-09-26 | 1971-11-16 | Vernon V Emery | Machine for drawing extruded plastic tubing or rod from an extruder |
US3972271A (en) * | 1973-12-20 | 1976-08-03 | G. D. Societa Per Azioni | Apparatus for producing understrips for hinge lid cigarette packets |
US3971277A (en) * | 1975-06-19 | 1976-07-27 | Owens-Corning Fiberglas Corporation | Intermittently operable rotary chopping apparatus for matted fibrous material |
US4034634A (en) * | 1975-10-03 | 1977-07-12 | Arbter C | Apparatus and method for unwinding and cutting a fabric web into individual uniform lengths |
US4183271A (en) * | 1978-03-31 | 1980-01-15 | Merrill David Martin | Rotary web shearing machine |
US4313781A (en) * | 1980-06-26 | 1982-02-02 | Ro-Ann Industries Corporation | Method and apparatus for cutting and sealing thermoplastic material |
US4432746A (en) * | 1981-05-21 | 1984-02-21 | The Procter & Gamble Company | Web segmenting apparatus |
US4512227A (en) * | 1981-11-25 | 1985-04-23 | Salvagnini Transferica S.P.A. | Apparatus for the automatic shearing of a sheet metal in several pieces of different size |
US4488466A (en) * | 1982-09-07 | 1984-12-18 | Seal Tech Corp. | Apparatus for cutting sheet material |
US4620467A (en) * | 1984-10-01 | 1986-11-04 | Hobart Corporation | Film cutter |
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Also Published As
Publication number | Publication date |
---|---|
JPH04242528A (ja) | 1992-08-31 |
EP0455112A3 (en) | 1993-01-20 |
EP0455112A2 (en) | 1991-11-06 |
CA2041118A1 (en) | 1991-10-31 |
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